There's also a different kind of sign at the restaurant on Forward Avenue, one that was placed by the Allegheny County Health Department.

"The mice somehow left, and the rats somehow came in," said Steve Steingart, of the Health Department.

When county health inspectors visited Frankie's and sister establishment Friends last week, they found "many rat droppings in the back room upstairs and a dead rat in the back corner... (and) rodent burrows in the back alley," according to a consumer alert.

In 2012, alerts were issued to Tram's, a Vietnamese restaurant in Lawrenceville, and Georgetowne Inn in Mt. Washington. Consumer alerts also were posted at Little Asia in Oakland, Tokyo Sushi Buffet in Ross Township, Rudy's Grill in McKees Rocks and Mullen's on the North Shore. All of those establishments corrected their violations, and the consumer alerts were lifted.

Health inspectors will return to Frankie's in the next 10 days. Steingart said that if the critical violations haven't been corrected by then, "We will have no other choice but to take the next step which would be pulling their permit for closure."

Pittsburgh police say they used evidence lifted from Mocospace after the suspect uploaded acts to the site. The girl told police that he knew she was only 13 and that he would stalk and harass her, waiting for her to get off the school bus.